Sinful Indulgence (often referred to as a sin) is the rare material used for enlightening units for the last step in each gate. This material is in limited supply to free players but is sometimes available from enlightenment summons as step rewards or for gems or from bundles. Note that there are also Otherworldly Indulgence which are used to enlighten collaboration units from other worlds (i.e. not the ones that are alternate versions of our normal units), but they are more plentiful and are usually obtained from collaboration events.
Regular Supply
- Friendship Coin Exchange - 1 available for 2000 friend coins monthly
- Summon Coin Exchange Shop - 1 available for 500 summon coins weekly
- EX Coin Exchange - 1 available for 500 EX coins and 1 available for 2000 EX coins (2 week refresh)
- TAC Coin Exchange - 1 available per week for 5 TAC coins
- Consecrated Elements - usually runs for 2 weeks every month. Doing the daily for a week gives you access to the bonus quest which gives 2 sins (so you can get 4 a month)
- PvP Coin Exchange - when the event runs there are usually a few available for coins
- Battle Coin Exchange Shop - when the event runs there is usually one available for coins
Event Acquired
Most free sinful indulgence are obtained through events, some of which will run periodically or are permanent, and some of which are only expected to run once. We aren't generally informed which events will rerun again later.
New events are no longer being added to this list as there are quite a lot of sources of sinful indulgence now. For a list of quests which provide sinful indulgence from milestones or quest missions, see Sinful Indulgence.
| Source | Quantity | Availability |
|---|---|---|
| Chloe/Vettel enlightenment challenge board | 3 | Permanent |
| Chocolate Magic (Noah J+) - coin exchange shop | 1 | Event Limited - Valentine Holiday (can get another every time shop returns) |
| Zahar enlightenment challenge board | 1 | Event Limited - Likely will not rerun |
| Babel Chronicles - Red Sparks of Iron - EX milestone/mission rewards | 2 | Permanent |
| Babel Chronicles - Dazzling Black Veins - EX milestone/mission rewards | 2 | Permanent |
| Using Hisham (Hisham J+) - EX milestone reward | 1 | Event Limited |
| Sacred Stone Memories - A Wish that Transcends Space and Time: Part One - EX mission reward | 1 | Permanent |
| Chamber of Tribulations - coin exchange shop and EX+ milestone rewards | 4 | Event Limited - rerun only includes 1 sin from shop |
| Babel Chronicles - Green Prayers in Drought - EX milestone/mission rewards | 2 | Permanent |
| Phantom of the Alchemist - Phantom of the Alchemist V [EX1] mission reward | 1 | Event Limited - periodic rerun |
| Blood Wolf by Any Other Name (Anastasia J+) - EX Nightmare mission reward | 1 | Event Limited - periodic rerun |
| Distraught Counter - EX mission reward | 1 | Event Limited - periodic rerun |
| Steel-Lined Wedding Aisle - EX multiplayer milestone reward and EX+ mission reward | 2 | Event Limited - periodic rerun |
| A Bond More Enduring Than Starlight (Emma J+) - EX milestone/mission reward | 5 | Event Limited - periodic rerun |
| Return to the Underworld (Jin J+) - EX+ milestone/mission reward | 2 | Permanent (Event Archives) |
| Sound of the Bells (Caris J+) - EX+ mission reward | 1 | Permanent (Event Archives) |
| Sacred Stone Memories - A Wish That Transcends Space and Time: Part Two - EX mission reward and EX+ milestone/mission reward | 3 | Permanent |
| Sacred Stone Memories - Two Swords, Two Wills - EX+ milestone reward | 1 | Permanent |
| Chamber of Tribulations - Series 2 - coin exchange shop and milestones | 5 | Event Limited - Likely will not rerun |
| The Girls Who Tread on the Remaining Snow - EX3 mission reward and EX1/2 multiplayer milestone reward | 3 | Permanent (Event Archives) |
| Babel Chronicles - Crossroads in the Devastation of War - Part 2 - EX milestone/mission reward | 2 | Permanent |
| Babel Chronicles - When Bells Toll Over White Snow - EX milestone/mission reward | 2 | Permanent |
| In Our Fated Future - EX/EX+ milestone/mission reward | 3 | Event Limited - periodic rerun |
| Dreamy Sacred Stone Memories - EX milestone/mission reward and Lizardman Shop | 4 | Event Limited - will likely rerun yearly |
| Wonderful Summer - EX/EX+ milestone reward | 2 | Event Limited - periodic rerun |
| Stairway to Heaven - EX-Hell milestone/mission reward | 2 | Permanent (Event Archives) |
| Mech Girls Can Fly - Teona points coin exchange shop | 1 | Event Limited - will likely rerun yearly |
| Sweet Aspirations - EX+ mission reward | 1 | Permanent (Event Archives) |
| Babel Chronicles - When Bells Toll Over White Snow - Part 2 - EX milestone/mission reward | 2 | Permanent |
| Crystal of Re-Union - EX/EX+ milestone/mission reward | 3 | Event Limited |
| Trick or Flower! - EX/EX+ mission reward | 2 | Event Limited - Halloween Holiday |
| 2nd Anniversary Countdown Quest - mission reward | 1 | Event Limited - will likely not run again |
| Unrelenting Gloom - mission reward | 1 | Event Limited |
| Forest Protector - EX+ mission reward | 1 | Permanent (Event Archives) |
| Dark Phantoms - Part 1 - mission reward/event summons | 7 | Event Limited |
| Dark Phantoms - Part 2 - mission reward/event summons | 9 | Event Limited |
| Dark Phantoms - Part 3 - mission reward/event summons | 11 | Event Limited |
| Soul Call - Mianne Edition - EX+ milestone reward | 1 | Permanent |
| Godless Revolution - Creating This World - Part 2 - event summons | 4 | Event Limited - periodic rerun |
| Also Sprach - Andante of the Dead Nine - EX mission reward | 1 | Event Limited - periodic rerun |
| The Signaling Shot Echoes to the Other Side - EX mission reward | 1 | Event Limited - periodic rerun |
| From a Snowman with Love - EX+ mission reward | 1 | Event Limited - will likely rerun yearly |
| Chamber of Tribulations - Series 3 - coin shop purchase | 1 | Event Limited - Likely will not rerun |
| For Whose Princess Could Endure This Nightmare? - event summons | 4 | Event Limited - not sure if it will rerun |
| Blitzkrieg of a Mentor - EX+/EX Hell mission/milestone rewards and coin exchange shop | 11 | Event Limited - periodic rerun |
| Chocolate Toy Box - EX+ mission reward | 1 | Event Limited - Valentine Holiday |
| Blade of Oaths - Piercing Demonic Spear - event summons | 4 | Event Limited |
| Spicy Chocolate Battle - coin exchange shop | 3 | Event Limited - Valentine Holiday |
| White Day Complex - EX mission reward | 1 | Event Limited - White Day |
| Rekindled Flames of Rage - milestone/mission reward from several quests | 10 | Event Limited - April Fool's |
| Magically Dyed Colorful Egg - EX mission reward | 1 | Event Limited - Easter |
| Crystal-Shot Heart - EX+ milestone reward | 1 | Permanent (Event Archives) |
| Septicolored Amber Sans Serif - milestone rewards and event summons | 9 | Event Limited - periodic rerun |
| A Lone Swordswoman and Her Siblings - milestone rewards and event summons | 7 | Event Limited - periodic rerun |
| Godless Revolution - Love: Instinct or Feeling? - Part 1 - event summons/Hell milestone/mission reward | 6 | Event Limited - periodic rerun |
| Godless Revolution - Love: Instinct or Feeling? - Part 2 - event summons | 2 | Event Limited - periodic rerun |
| Sandy Journey Under Stars - EX+ mission reward | 1 | Permanent (Event Archives) |
| Xeno Belt Region - Realm of the Thunderous Emperor - coin exchange shop and floor clear rewards | 11 | Event Limited - periodic rerun |
| Mystic Tower Veda - Fringe Dimension - coin exchange shop and floor clear rewards | 6 | Event Limited - periodic rerun |
| Summer Showdown - coin exchange shop | 1 | Event Limited - Summer |
| Everlasting Love and Small Adventures - mission rewards | 2 | Permanent |
| Young Sweeper - mission rewards | 2 | Permanent |
| Xeno Belt Region - Realm of the Water Guardian - coin exchange shop and floor clear rewards | 11 | Event Limited - periodic rerun |